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smtp-penetration-testing
80 / 100 · Low risk
Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.
By sinhoneyy/master-skills (GitHub) · coding · 17 stars · scanned at commit 8e70b78
Conduct comprehensive security assessments of SMTP (Simple Mail Transfer Protocol) servers to identify vulnerabilities including open relays, user enumeration, weak authentication, and misconfiguration.
Works with any agent that supports SKILL.md skills.
What this skill can do
Downloads and installs other software
The author does not mention this.
Found in 4 places.
Show 1 more
Runs commands on your computer
The author does not mention this. Expected for a coding skill.
Found in 21 places.
Show 17 more
- skills/smtp-penetration-testing/SKILL.md, line 126
nc TARGET_IP 25 - skills/smtp-penetration-testing/SKILL.md, line 147
VRFY admin - skills/smtp-penetration-testing/SKILL.md, line 168
smtp-user-enum -M VRFY -U /usr/share/wordlists/users.txt -t TARGET_IP - skills/smtp-penetration-testing/SKILL.md, line 183
use auxiliary/scanner/smtp/smtp_enum - skills/smtp-penetration-testing/SKILL.md, line 194
nmap --script smtp-enum-users -p 25 TARGET_IP - skills/smtp-penetration-testing/SKILL.md, line 206
nmap -p 25 --script smtp-open-relay TARGET_IP - skills/smtp-penetration-testing/SKILL.md, line 225
use auxiliary/scanner/smtp/smtp_relay - skills/smtp-penetration-testing/SKILL.md, line 234
MAIL FROM:<> - skills/smtp-penetration-testing/SKILL.md, line 249
hydra -l admin -P /usr/share/wordlists/rockyou.txt smtp://TARGET_IP - skills/smtp-penetration-testing/SKILL.md, line 264
medusa -h TARGET_IP -u admin -P /path/to/passwords.txt -M smtp - skills/smtp-penetration-testing/SKILL.md, line 270
use auxiliary/scanner/smtp/smtp_login - skills/smtp-penetration-testing/SKILL.md, line 284
MAIL FROM:<attacker@test.com> - skills/smtp-penetration-testing/SKILL.md, line 299
MAIL FROM:<ceo@target.com> - skills/smtp-penetration-testing/SKILL.md, line 314
openssl s_client -connect TARGET_IP:25 -starttls smtp - skills/smtp-penetration-testing/SKILL.md, line 329
dig TXT target.com | grep spf # SPF - skills/smtp-penetration-testing/SKILL.md, line 412
nmap -sV -sC -p 25,465,587 mail.target.com - skills/smtp-penetration-testing/SKILL.md, line 442
smtp-user-enum -M VRFY -U users.txt -t 192.168.1.100 -p 25
and 1 more places
Other copies in this repository
sinhoneyy/master-skills has 1 more folder with a skill named smtp-penetration-testing. This page shows the lowest-scoring copy.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'smtp-penetration-testing' ] || [ -L ~/.agents/skills/'smtp-penetration-testing' ]; then echo 'A skill folder named smtp-penetration-testing already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/sinhoneyy/master-skills' "$d" && git -C "$d" checkout --quiet '8e70b780359915a1f197ca37a1add2d4016115a2' -- 'skills/smtp-penetration-testing' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/smtp-penetration-testing' ~/.agents/skills/'smtp-penetration-testing' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'smtp-penetration-testing' ~/.claude/skills/'smtp-penetration-testing' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
The badge for sinhoneyy/master-skills shows the score of its lowest-scoring skill.
[](https://zalavijaysinh.github.io/skilltrust/repos/sinhoneyy/master-skills/)
Score history
| Date | Version | Score |
|---|
| 2026-11-09 | 8e70b78 | 80 |